I have a feeling you'll be seeing a lot more 2 speeds in the upcoming games. With the growth of FIRST, the probability is fairly high that the field will remain decently open. However, a 2 speed can be very useful even if there is an obstacle.

Also, the 2 speed is becoming even more viable for the average team. I currently have a design that should be prototyped soon(ish) of a sub $100 tranny, designed specifically for 6 inch wheels.